GooDeal Carburetor WT-827 for Ryan Ryobi Trimmers 7843 753-05133 Compatible with: Ryan Ryobi 753-05133, 7843, 753-04333. Replace Walbro # WT-827 / WT-827-1 , WT-149-1, WT-539, WT-539-1. This is a high quality aftermarket part.